Mercurial > projects > dil
view trunk/src/Token.d @ 239:7911f6a92e6e
- Added 'new' and 'delete' declarations to Token and uncommented next and prev members. Added HEAD to TOK.
- Tokens are stored in a doubly linked list by the Lexer now.
- Added method scanNext() which can be used by peek() and nextToken().
- Saving 'token' in Parser.try_().
author | aziz |
---|---|
date | Mon, 30 Jul 2007 12:36:04 +0000 |
parents | b7bde6583d3e |
children | 32d354584b28 |
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/++ Author: Aziz Köksal License: GPL2 +/ module Token; import std.c.stdlib : malloc, free; import std.outofmemory; struct Position { size_t loc; size_t col; } enum TOK { Invalid, Identifier, Comment, String, CharLiteral, WCharLiteral, DCharLiteral, // Numbers Int32, Int64, Uint32, Uint64, // Floating point number scanner relies on this order. (FloatXY + 3 == ImaginaryXY) Float32, Float64, Float80, Imaginary32, Imaginary64, Imaginary80, // Brackets LParen, RParen, LBracket, RBracket, LBrace, RBrace, Dot, Slice, Ellipses, // Floating point number operators Unordered, UorE, UorG, UorGorE, UorL, UorLorE, LorEorG, LorG, // Normal operators Assign, Equal, NotEqual, Not, LessEqual, Less, GreaterEqual, Greater, LShiftAssign, LShift, RShiftAssign,RShift, URShiftAssign, URShift, OrAssign, OrLogical, OrBinary, AndAssign, AndLogical, AndBinary, PlusAssign, PlusPlus, Plus, MinusAssign, MinusMinus, Minus, DivAssign, Div, MulAssign, Mul, ModAssign, Mod, XorAssign, Xor, CatAssign, Catenate, Tilde, Identity, NotIdentity, Colon, Semicolon, Question, Comma, Dollar, /* Keywords: NB.: Token.isKeyword() depends on this list being contiguous. */ Abstract,Alias,Align,Asm,Assert,Auto,Body, Bool,Break,Byte,Case,Cast,Catch,Cdouble, Cent,Cfloat,Char,Class,Const,Continue,Creal, Dchar,Debug,Default,Delegate,Delete,Deprecated,Do, Double,Else,Enum,Export,Extern,False,Final, Finally,Float,For,Foreach,Foreach_reverse,Function,Goto, Idouble,If,Ifloat,Import,In,Inout,Int, Interface,Invariant,Ireal,Is,Lazy,Long,Macro, Mixin,Module,New,Null,Out,Override,Package, Pragma,Private,Protected,Public,Real,Ref,Return, Scope,Short,Static,Struct,Super,Switch,Synchronized, Template,This,Throw,True,Try,Typedef,Typeid, Typeof,Ubyte,Ucent,Uint,Ulong,Union,Unittest, Ushort,Version,Void,Volatile,Wchar,While,With, HEAD, // start of linked list EOF } alias TOK.Abstract KeywordsBegin; alias TOK.With KeywordsEnd; struct Token { TOK type; // Position pos; Token* next, prev; char* start; char* end; union { struct { string str; char pf; } dchar dchar_; long long_; ulong ulong_; int int_; uint uint_; float float_; double double_; real real_; } alias srcText identifier; string srcText() { assert(start && end); return start[0 .. end - start]; } static string toString(TOK tok) { return tokToString[tok]; } bool isKeyword() { return KeywordsBegin <= type && type <= KeywordsEnd; } int opEquals(TOK type2) { return type == type2; } new(size_t size) { void* p = malloc(size); if (p is null) throw new OutOfMemoryException(); *cast(Token*)p = Token.init; return p; } delete(void* p) { free(p); } } string[] tokToString = [ "Invalid", "Identifier", "Comment", "String", "CharLiteral", "WCharLiteral", "DCharLiteral", "Int32", "Int64", "Uint32", "Uint64", "Float32", "Float64", "Float80", "Imaginary32", "Imaginary64", "Imaginary80", "(", ")", "[", "]", "{", "}", ".", "..", "...", "Unordered", "UorE", "UorG", "UorGorE", "UorL", "UorLorE", "LorEorG", "LorG", "=", "==", "!=", "!", "<=", "<", ">=", ">", "<<=", "<<", ">>=",">>", ">>>=", ">>>", "|=", "||", "|", "&=", "&&", "&", "+=", "++", "+", "-=", "--", "-", "/=", "/", "*=", "*", "%=", "%", "^=", "^", "~=", "~", "~", "is", "!is", ":", ";", "?", ",", "$", "abstract","alias","align","asm","assert","auto","body", "bool","break","byte","case","cast","catch","cdouble", "cent","cfloat","char","class","const","continue","creal", "dchar","debug","default","delegate","delete","deprecated","do", "double","else","enum","export","extern","false","final", "finally","float","for","foreach","foreach_reverse","function","goto", "idouble","if","ifloat","import","in","inout","int", "interface","invariant","ireal","is","lazy","long","macro", "mixin","module","new","null","out","override","package", "pragma","private","protected","public","real","ref","return", "scope","short","static","struct","super","switch","synchronized", "template","this","throw","true","try","typedef","typeid", "typeof","ubyte","ucent","uint","ulong","union","unittest", "ushort","version","void","volatile","wchar","while","with", "EOF" ];